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Wakeup
As the turbine’s open circuit voltage (Voc) rises above the battery bank’s
voltage by approximately 2 volts, the MPPT controller gets ready to work to
deliver the best possible power to the batteries. During this period, the MPPT
is calculating the PWM (Pulse-width modulation) duty cycles by turning
on power supply voltages in the proper sequences, and making internal
calibrations. At wakeup, the MPPT closes its relays and will then start sweeping
the input voltage, (the “initial” sweep), towards the battery voltage. This may
happen numerous times at both dawn and dusk until there is enough power
from the turbine to keep charging the battery bank. Wakeup is also a time
when the MPPT controller acquires a new Voc.
Sweeping
In Auto-Sweep MPPT mode, the MPPT is either doing an initial sweep of
the turbines voltage from Voc towards battery voltage after wakeup, or
is doing a periodic dithering mini-sweep to stay on the max power point.
Below 5 amps of battery output current, this will flash briefly as the MPPT
operates at the Park MPP voltage. This signal may also appear briefly if
the MPPT has reached the max battery current setting and is raising the
turbines operating voltage to keep the battery current from exceeding the
maximum battery output current limit setting.
Absorb
There is an external DC source (wind generator/hydro) keeping the battery at
or above the absorb set point.
Bat Full
The MPPT is waiting for the battery voltage to fall to just below the float
voltage set point before continuing with the float stage. This may also be
displayed when external DC charging sources are present.
Re-Cal
There are certain abnormal conditions that can confuse the current measuring
method in the MPPT. When and if this happens, the MPPT will temporarily stop
and re-calibrate. This may sometimes happen because of negative current, i.e.,
Содержание 1500 Watts Wind Turbine
Страница 1: ...User s Manual 1500 Watt Windmill Version 2021 Aug...
Страница 18: ...16 Caution Make sure that all the bolts are secured and the dots all face to the operator...
Страница 22: ...20 Step 9 Final product diagram Note The wind turbine pole stand is not included with the unit...
Страница 48: ......